/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraModule.h
typedef TBaseDelegate_TwoParams< [FNiagaraCompilationTaskHandle](API\Plugins\Niagara\FNiagaraCompilationTaskHandle), [UNiagaraSystem](API\Plugins\Niagara\UNiagaraSystem) *, bool > FOnRequestCompileSystem